Hajdova Hiža is a large cave located In the area of Veliki Drgomalj mountain, north of the town of Delnice. This cave is reachable only by skilled professional speleologists due to its challenging terrain. Tourists are not permitted to pass here. The cave has a rather large entrance, which is considered to be the largest underground hallway discovered in our karst (85 meters long, 27 meters wide and about 16 meters high), is just a mere illusion of passing passage, as the road further leads to extremely steep cliffs and deep, yet unseen channels.
